Device for use in erecting silos.



H. A. SMITH.

DEVICE FOR USE IN ERECTING SILOS.

APPLICATION FILED AUG.28. l9l6. 7 1,21 8,008. Y Patented Mar. 6, 1917.

2 SHEETS-SHEET I.

WITNESSES: IN VENTOR.

H/PAM ,4. sM/m A TTOR NE YS.

H. A. SMITHL DEVICE FOR USE IN ERECTING S ILOS.

I APPLlCATlON FILED AUG.28, 19l6. 1,218,008. Patented Mar. 6, 1917.

2 SHEETS-SHEET 2- TIIIIII/III/III'III/IIIII 7/]!III/I1LWIIIIIIIIIIIIIIIIIII VIIIIIIIIIA WITNESSES.- INVENTOR.

A TTORNE YS.

' Hi'RAM A; sivrITH, oF'PAw raw, MroiiiGAiv.

' DEvIoE'roie 's'E IN nriiorriiv sIIios.

Application'fi1ed'August'28, 1916. Serial no. 117,254.

To all whom it may'concern Be it known that I, HIRAM A; SMITH, a citizen of the United States, residing at Paw Paw, Michig'am'have invented certain'new and useful Improvements in Devices for Use in Erecting Silos,of' whichthe following is a' specification;

This invention relates to improvement's in devices for use in erecting silos.

The main objects of this invention are; First, to provide an improved p'latform and hoistingdevice for use inerecting silos. Second, to provide an'improved platform and hoisting device for use'in erecting silos which is easily adjusted as the work progrosses and one which greatly facilitates the work.

Third, to provide an improved device for use in erecting silos which'isfcomparatively simple in structure and light in weight and may be readily knocked'down and compactly arranged for storage or' transportation. I

Further objects, andobjects relating to structural details, will definitely appear from the detailed description'tofollow.

I accomplish the objects of my invention by .the devices'and means described in' the following specification. The invention is clearly defined and pointed out in the claims. v

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part. of thisspecification, in which Figure I is a perspective view ofthe upper, portion of asilo. in process of erection with my improved device position thereon, the same being shown in processof adjustmentl Fig. II is an enlarged detail section on a line corresponding to line 2-2 ofFig. I.

Fig. III is a perspective view of the swiveled hoisting boom support.

V Fig. IV is a perspectiveview of one of the post collars.

Fig. V is aside view of the post platform supporting arms andbraces collapsed.

Fig. VI is a, side view of the boom and its supporting struts collapsed r a In the drawing similar. reference numerals refer to similar parts throughout the several views. 1

.Referringto the drawing, the silo wall in the structure illustratedis formed offblocks or staves 1 laidto" break joints, the'wallbeing shown in process of erection. My improved device for'use in erecting silos'comprisesa center. post2, preferably a section of pipe, .to which the platform supporting arms 3 are secured in a radiating relation.

For convenience in attaching the arms the post is'provided with collars a and5 having pivot ears6, thereon. The ends of the'collars are slottedat 7, the collars'being secured in place by bolts 8 arranged transversely of the slots so that" the collars are securely clamped upon the post.

*l ateiit i 1517' The supporting arms 3 are secured to the i ears of the lower collar 4 by: means'of the pivot bolts 9." 'Bra'ces -10 and '11 are secured to'the ears'of the upper collar 5 and are detachably connected .to.' the arms- 3 by means of thebolts 12. The braceslO are formed of angle iron Wliile'-th'e braces 11 are formed of rods, the braces being alter natc. This'alternate form of braces is used inorder to secure lightness and rigidity.

The platform boards 13 are detachably secured to the outer ends ofthe arms 2'by the bolts 14. 'To each alternate platform arm I secure a rope and pulley hoisting tackle, designated generally by the numeral.

15,preferably by means .of flange plates l6 secured by the bolts 14 (see Fig. II), These plates have rings 17' with which the-lowerblocks of the tackles are engaged as are also the hanger chains 19 which are provided with hooks 20 adapted to be engaged over the wall. 4 hooks 21' adapted tobe engaged over the edge of" the wall. Withthis arrangement of parts the platform is supportedwithin thewall'at the proper height for the workmen and may be adjusted or raised'a'sthe courses are laid. I j g e To raise the platform'the tackle hooks 21 are engaged over the wall and the 'platform raised so as to permit the hanger hooks The tackles are providedwith 20 being engaged and after they are engaged the platform is lowered until it is supported by the hangers.

The hoisting boom 22 is arranged in a sleeve-like support 23 pivoted on the swivel pin 24 which is supported by the swivel bracket 25. At its outer end the hoisting boom is provided with a pulley 26 for the hoisting rope 27.

The hoisting boom is provided with a pair of struts 28 adapted to rest on the wall, the struts being provided with feet 29. By removing the bolt 30 the struts may be collapsed as shown in Fig. VI. 7

In use the boom is shifted about the wall as the blocks are laid so that the blocks may be swung to position while still supported by the hoist, the struts being diverged clownwardly so that the blocks may be swung into place between them.

With my improved hoisting device and platform the Work of erecting a silo is very greatly facilitated; the structure is simple and light and may be knocked down so that it may be readily stored or transported.

I have not attempted to illustrate or describe various modifications which I contemplate as being desirable under certain conditions or for certain adaptations, as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or adapt the same as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent,is:

1. In a structure of the class described, the combination of a center post, collars secured to said post and provided with pivot ears, radiating arms pivoted to the ears of the lower collar, braces pivoted to the ears of the upper collar and detachably secured to said arms so that they may be detached therefrom and the arms and braces collapsed at the side of the post, platform members removably mounted on the outer ends of said arms, hoisting tackles secured to said arms, and a hoisting boom secured to said center post.

2. In a structure .of the class described, the combination of a center post, radiating arms pivotally mounted on said post, braces pivoted to said post and detachably secured to said arms so that they may be detached therefrom and the arms'and braces collapsed at the side of the post, platform members removably mounted on the outer ends of said arms, hoisting tackles secured to said arms, a hoisting boom, and; struts forsaid boom adapted to rest on the wall and adjustable thereon.

3. In a structure of the class described, the combination of a platform, a center post, a clip secured to the upper end of said center post having alined openings, a pivot pin having a U -shaped top mounted in said alined openings, a collar pivotally mounted on said U-shaped top, a boom, one end of which is slidably received in the opening of said collar, a hoisting mechanism at the opposite end of said boom, and struts intermediate the collar and the hoisting mechanism for supporting said boom.

4. In a structure of the class described, the combination of a platform, a center post, a clip secured to the upper end of said center post, a pivot pin having a U-shaped top mounted in said clip, a collar pivotally mounted on said U-shaped top, a boom, one end of which is slidably received in the opening of said collar, a hoisting mechanism at the opposite end of said boom, and struts intermediate the collar and the hoisting mechanism for supporting said boom.

5. In a structure of the class described, the combination of a platform, a center post, a clip secured to the upper end of said center post having alined openings, a pivot pin mounted in said clip, a collar pivotally mounted on said pin, a boom, one end of which is slidably received in the opening of said collar, and a hoisting mechanism at the opposite end of said boom.

6. In a structure of the class described, the combination of a platform, a center post, a collar pivotally mounted on the top of said center post, a boom, oneend of which is slidably received in the opening of said collar, a hoisting mechanism at the opposite end of said boom, and struts intermediate the collar and the hoisting mechanism for supporting said boom.

7. In a structure of the class described, the combination of a platform, a center post, a collar pivotally mounted on the top of said center post, a boom, .one end of which is slidably received in the opening of said 001- lar, and a hoisting mechanism at the opposite end of said boom.

8. In a structure of the class described, the combination of a platform, a center post secured thereto, hoisting and supporting means for said platform, a hoisting boom, a support in which said boom is supported for longitudinal adjustment secured to said post, and struts for said boom adapted to rest on the wall, the lower ends of said struts being spaced apart.

9. In a structure of the class described, the combination of a platform, a center post secured thereto, hoisting and supporting means for said platform, a hoisting boom pivotally supported on said post, and struts for said boom adapted to rest upon the wall, the lower ends of said struts being spaced apart.

10. In a structure of the class described, the combination of a platform, a center post, hoisting and supporting means for said platform, a hoisting boom, a support in which said boom is supported for longitudinal ad'- justment sWiveled on said post, and struts for said boom adapted to rest on the Wall J and adjustable thereon.

11. In a structure of the class described, the combination of a platform, a center post, hoisting and supporting means for said platform, a hoisting boom swiveled on said post,

I-IIRAM A. SMITH. [1 s.] Witnesses:

GRACE B. THOMPSON, MARGARET L. GLASGOW.

IIGSSBS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

